JP5171961B2 - End connector for shielded cable - Google Patents

Abstract

End connector (20) for connecting a shielded cable (30) to an equipment (10) on which it is to be connected. The connector comprises a connector body (40) provided to receive the shielded end of said shielded cable, and an orientation component (70) having first fastening means (74) for the fastening thereof onto said connector body and guiding means (72A, 72B, 72C) to set the orientation of the cable at the connection thereof with the connector body. In this end connector, the orientation component (70) further comprises second fastening means (100) for the fastening thereof onto said equipment (10). Thanks to these second fastening means, a long-lasting connection is realized between the connector (20) and the equipment (10).

Description

  The present invention relates to an end connector. More particularly, the present invention relates to an end connector in a vehicle in which a device, particularly a lighting device such as a headlight, is attached to the end of a shielded cable that connects to an electronic card that supplies power to the lighting device.

  In a vehicle, various devices are arranged at high density in the headlight region, and all the sizes of the devices need to be miniaturized as much as possible. This advantageously reduces the weight of the parts and in many cases their price. For these reasons, there is always a desire for miniaturization. Therefore, the size of the connector, and more generally, the volume occupied by the connection must be kept as small as possible.

  Therefore, there is a demand for a connector that realizes a connection function having a high reliability over the service life of the vehicle while having a small size.

  In the prior art, such connectors are designed taking into account a connector body that normally includes a connector housing that supports a conductive shield. The connector housing is made of plastic while the shield is a metal part.

  Fastening means may be provided on the connector for connecting the connector on the device to which the connector is connected. Known fastening means are hooks or bumps, which cooperate with corresponding parts of the device to be connected and have a shape designed to hold them, for example.

  However, it is known that in such a connector, it is difficult to ensure a long-term connection or a connection when the vibration level is high. In practice, after the vehicle has been in use for several years, in some cases (for example, in the case of a passenger car), the connector may be disconnected, thereby disconnecting the device.

  The reason why this disconnection occurs is because the connector housing is a plastic part. Over the years, the plastic material loses some of its elasticity and wears out small parts such as pegs that realize the connection function and gradually increases the risk of cutting.

  Another problem associated with the connection of electrical equipment is the emission of electromagnetic radiation. This problem is particularly caused by modern illumination bulbs used in vehicles, for example, high intensity discharge lamps such as xenon lamps. Such a light bulb needs to be powered by a relatively high intensity current under an average voltage of about 40V.

  For safety reasons, it is necessary to limit the radiation emitted or received by the cable and the connection between the electronic card and the bulb.

  In order to reduce these radiations, shielded cables that contain multiple inner conductors within an insulating sheath or braided wire must generally be used.

  Inevitably, the connector maintains a continuous shield between the cable and the connected device (headlight), thereby emitting unwanted radiation in the connection between the cable and the device. It is hoped that it should be done or not received. This is why the shielding means is provided in the connector.

  Furthermore, it is always preferable to shorten the length of the cable in order to further reduce the level of radiation emitted by the cable, which also reduces costs.

  In addition, the cable is usually an electronic card to prevent vibration or noise under the vehicle hood and so that the cable does not get in the way and does not interfere during maintenance operations And is guided on the path between the connected devices.

  This route guidance often involves setting or defining the direction of the cable at the connection to the device, ie the connector. In order to determine the route of the cable, the orientation component disclosed in Patent Document 1 is used at least at the connection portion with the connector.

  Thanks to this component, the direction of the cable is determined at the connection with the connector. This direction is set to the most preferred direction to shorten the length of the cable, thereby minimizing the radiation emitted by the cable, its length, weight and cost.

  Despite these advantages, this orientation component does not solve the problem of the connector body being unnecessarily detached from the device.

  Furthermore, when a single connector body realizes the mechanical connection between the cable and the device, it is necessary to provide special fastening means in order to realize its function. Therefore, the complexity of the connector body increases and the size increases.

European Patent No. EP1622231

  Therefore, an object of the present invention is an end connector for connecting a shielded cable to a device, wherein the end connector is connected to the device and comprises a directing component, the mechanical connection to the device However, it is to provide an end connector that is secured so that the connector does not suffer from undesired cuts.

  More particularly, the connector comprises a connector body provided for receiving a shield end of the shielded cable, first fastening means for fastening a directing component to the connector body, and the orientation A directing component having cable guiding means for setting the direction of the cable at a connection portion between the component and the connector main body.

  The above mentioned object is achieved by the fact that the directing part further comprises a second fastening means for fastening the directing part to the device.

  In fact, it is connected to the connector body using the first fastening means and is connected to the device using the second fastening means (and is therefore a substantially mechanical and elastic part). Orienting components have been demonstrated to provide a reliable connection between the connector and the device.

  Therefore, the directing component becomes a directing and fastening component, firstly holding the end of the cable connected to the device, and secondly at the connection with the connector. It is provided for two mechanical functions such as directing the cable (however, the directing component also has an electrical function such as an electrical seal). For these purposes, the orienting part is preferably made of a material with high mechanical resistance, such as a metal such as steel or an industrial grade plastic. Its mechanical strength is particularly useful for bending and directing the shielded cable.

  Furthermore, in order to achieve the object of the present invention, this mechanical strength is used to increase the reliability of the connection between the connector and the device. This mechanical connection function is integrated into the orientation component. Thus, the connector body is removed (or at least partially removed) from its mechanical connection function. Thereby, the size of the connector main body can be further reduced, the material of the connector main body can be changed, and the dielectric characteristics thereof can be optimized. Thereby it is possible to use a connector body as described in European patent application EP1622221, without changing or substantially changing this connector body and mechanically fixing it to the device Provided connections are also provided.

  Advantageously, at least one of the first and second fastening means comprises hook means or clip means. Such fastening means have demonstrated their performance for the connection. The clip fastening means can be clipped in a single motion using the elasticity of the fastening means.

  Advantageously, the connector body further comprises auxiliary fastening means, so that the connector body can be fastened on the device. These fastening means are used in order to supplement the fastening by the directing part. These auxiliary fastening means may be useful, for example, when the orientation of the cable relative to the connector needs to be changed without cutting the cable. Since the second fastening means is on the directing part, these auxiliary fastening means can have a minimum size since a large fastening force is not desired. They are elastic catches that are designed to elastically engage the holding surface of the device and to automatically remove the surface when a sufficient pulling force is applied to the connector body. The member can simply be provided.

  In this case, that is, when the connector includes such a fastening means that contributes to the connection portion on the device, the divided functions of the fastening function may be as follows. That is, the fastening means of the connector includes a rail part or a slide part, or any guiding means for realizing a sliding connection with the device, and the second fastening means of the directing component is, for example, Locking means such as a holding tab for preventing the device from being arbitrarily disconnected from the connector.

  Furthermore, advantageously, the connector further comprises release means, which can release the connector from the device. By means of these release means, the connector can be detached from the device and coupled. This situation may be necessary in different situations, for example when the device needs to be replaced after a failure.

  In a preferred embodiment, the release means are provided on the directing part, in particular release the fastening provided by the second fastening means. Therefore, they can benefit from mechanical properties such as restoring force or elasticity of the directing part. More generally, however, the release means may be provided on the connector body or on the directing part.

  As shown in the following figures, advantageously, the directing part can be formed in a single part, including the release means, in particular from a single metal plate. Therefore, advantageously, the directing part is manufactured at low cost and can be mounted very easily. A metal plate is a material that incorporates high mechanical strength in combination with higher elasticity. Due to its elasticity, self-positioning fastening means such as hooks or clip fastening means can be used, as will be seen below.

  Preferred embodiments of electrical connectors will now be described by way of example with reference to the accompanying drawings.

FIG. 1 is a perspective view showing an end connector according to the present invention, and shows a state immediately before being attached to a device. FIG. 2 is a perspective view showing the end connector according to the present invention, after being attached to the apparatus. FIG. 3 is a perspective view showing a step of attaching the orientation component on the connector body. FIG. 4 is a perspective view showing a step of attaching the orientation component on the connector body. FIG. 5 is a perspective view showing the structure of the orientation component. FIG. 6 is a perspective view showing the structure of the orientation component. FIG. 7 is a cross-sectional view of the connector attached to the apparatus. FIG. 8 is a cross-sectional view of the connector attached to the apparatus.

  With reference to FIGS. 1 and 2, the attachment of the end connector and its construction according to the present invention will now be described.

  1 and 2 show a connector 20 attached to the device 10. In this embodiment, the device 10 is a headlight comprising an HID bulb 12. The light bulb 12 is supported on a sheet on the upper surface 14 of the housing 11.

  The connector 20 mainly includes a connector main body 40 to which an orientation component 70 is attached. The connector 20 is connected to the shielded cable 30 and connected to the device 10. At the other end (not shown) of the cable 30, the cable 30 is connected to the electronic card together with the ballast, and sends a supply current to the headlight.

  The connector body 40 includes electrical connection means by which the cable 30 is electrically connected to the device 10 (this includes electrical connection of the electrical shield braided wire 31 of the cable 30 to the outer metal case of the housing 11). Electrical connection means of the connector body 40 including electrical terminals and the like are well known in the art and will not be further described here.

  The connector body 40 further includes fastening means for positioning on the device. These fastening means are mainly guiding means for guiding the sliding movement of the connector 20 relative to the device 10 when the connector 20 is connected to the device 10. These fastening means can partly contribute to the fastening of the connector 20 to the device 10, but they are not designed to resist pulling forces acting in a direction opposite to the connecting direction. . Usually, the fastening means of the connector body is a male type and a female type, and there is no hook or fastener. On the other hand, according to the invention, the directing component also comprises fastening means (described below) for fastening to the device. These fastening means of the directing part are locking means, which can reliably prevent the connector from being disconnected from the device. The fastening means of the connector body 40 includes the protrusions 16 of the device 10 and corresponding receptacles 26 and openings (ie guide paths) 28 of the connector body 20.

  The protrusion 16 of the device 10 is a male / female or male-female protrusion that is disposed on the side 13 of the housing 14. When connected, as shown in FIGS. 1 and 2, the protrusion 16 is installed around a receptacle 26 that accommodates a female terminal (not shown) and guided to a guide path 28 on the outside thereof. The The receptacle 26 accommodates electrical terminals (not shown in the drawings) that are connected to corresponding electrical connection means of the device for electrical connection of the device 10 to the connector 20.

  In this embodiment, the fastening means of the connector body is a male-female or male / female projection that cooperates with the receptacle 26 and opening 28 of the device. More generally, the connection means of the connector body 40 contributes to fastening the connector 20 to the device 10, and in particular guides the connector along the attachment by sliding movement in order to attach the connector to the device. As such, it can be any shape that can engage and cooperate with the corresponding shape of the device.

  When a connector such as the connector 20 of this embodiment is used, the connection of the cable 30 to the device 10 is very easy. Usually, the connector 20 is connected to the cable 30 at a cable manufacturing factory, and the cable 30 is delivered after it is prepared to be attached to the apparatus 10 as shown in FIG. However, the assembly order may be reversed.

  The connection between the connector body 20, the directing component 70, and the cable 30 will now be described with reference to FIGS.

  The connector body has a generally rectangular shape, and its top surface 42, side surface 44, and back surface 46 can be seen in FIGS. The aforementioned connection means of the connector 20 (receptacle 26) is arranged on the front face of this connection.

  The internal structure of the connector body is well known in the art and will not be described in detail here. It is sufficient to show that it includes an inner housing 34 that is a molded part of plastic that supports the outer shield 32 (see FIGS. 7 and 8).

  This shield provides a persistent electrical shield against electromagnetic interference between the electrical shield of the cable (braided wire 31) and the corresponding electrical shield of the device 10.

  The cable 30 is connected to the connector body 20 on the back surface 46 of the connector body 20. In the drawing, it is shown having a somewhat rectangular shape in the vicinity of the connection portion with the connector 20, but it usually has a substantially circular cross section and corresponds to the shape of the cable braided wire 31. The cable 30 is gripped by a crimped collar 60 that securely holds the braided wire 31 on the neck 62 of the shield protruding from the back surface 46 of the connector 20.

  Since the braided wire 31, and more generally the entire cable 30, is flexible, the cable end can be bent with a very small radius of curvature. Because of this feature, the orientation piece need not be large. The back surface 76 can be set slightly apart from the connector body (at a distance slightly longer than the diameter of the cable 30).

  The directing part is made of a curved metal plate. This is formed so as to include guiding means for setting the direction of the cable at the connection portion with the connector. These guiding means comprise three or four openings 72A, 72B, 72C, and the shielded cable 30 is in one of three or four specific directions B, C, D (FIG. 4), You can pass through them to set the direction of the cable. A fourth opening may be provided through the rear wall 76 to connect the cable along the connection direction (arrow A).

  The cable is adapted to pass through any of these openings 72A, 72B, 72C so that the cable is oriented in the appropriate direction at the connection with the connector. Therefore, the length of the cable can be minimized, and the route of the cable leading to the electronic card can be optimized.

  Since the directing part has a mechanical function, it should preferably be made of a strong and resilient material. It may be made of molded plastic, but is preferably made of a curved metal plate, as shown, and is manufactured by pressing, bending and cutting.

  The material of the directing part should also have sufficient elastic characteristics. In practice, in addition to its orientation function, the orientation component implements the main function of fastening for the first and second fastening means. In the example shown in the figure, the first fastening means is formed by a hook projection 74 held in a corresponding hole 50 in the connector body, and the second fastening means is held in a recess or hole 18 in the device. It is formed by the holding part 100 designed as described above.

  Advantageously, these fastening means are self-locking when connected, which means that they can be deformed for a short time when installed, and then their elasticity By nature, it means that as soon as they enter the set hole, they return to their (original) shape.

  More precisely, the first fastening means means to fix the connection of the directing part to the connector body and comprises four hooks 74, two of which extend towards the connector. Two corners of the top surface 77 of the orientation component being in place, the other two being in symmetrical positions on the bottom surface 78. The connector body has four windows or holes 50, which are located at the four corners of the rear surface of the connector body. These windows are sized so that the hooks 74 can penetrate them, and these windows are on the back 46 of the connector body that serves as a holding means for holding the hooks 74 in the window 50. Open at. When it is connected to the connector body 20, the directing component is normally pushed manually on the connector body in the connection direction corresponding to the arrow A (FIG. 3). During this movement, the hook 74 connects to the window 50 provided on the connector body 20 so that the directing component is connected and locked to the connector body 20. The hook 74 prevents the orientation component being handled from being pulled out, except by using a tool specially designed to remove the hook 74.

  It should be noted that the hook 74 has an important positioning function as well as a function to resist pulling. In fact, when the hooks are engaged with the window 50, their ends also contact the inner surface (at the top and bottom surfaces) of the shield 32. Therefore, because of the position of the four corner hooks (seen in the connection direction) of the orientation parts, the hooks fix the position of the orientation parts on the connector body and It is possible to prevent the rotation from occurring.

  Further, when the orientation component is set in place, the hook 74 is locked to the window 50 and the orientation component back 76 contacts the cable 30 to prevent further movement of the orientation component in the connecting direction. .

  The second fastening means serves to mechanically lock the orientation component to the device 10. Advantageously, the second fastening means comprises a holding part (claw part 100) for engaging and locking the device 10. In order to release the holding part, a lever (96) is provided, which can be pushed, so that the holding part moves away from the holding part engagement direction, thereby the connector. Comes off.

  Advantageously, this holding part is formed in a tongue-like extension 90 and is distorted or inclined with respect to the connecting direction (arrow A). Extends in the direction.

  The prong 90 is from the main portion of the directing piece 70 along the appropriate distance of the device 10 so that it comes into contact with the corresponding gripping part (hole 18) of the device whose holding part can be locked. Extend in the direction. In order to lock, the holding part is moved in a direction that needs to be different from its connection direction (ie a direction that is distorted or inclined with respect to the connection direction). By such movement, the holding part is locked by the corresponding surface or part of the device, in this embodiment (FIGS. 7 and 8), by the inner surface of the hole 18.

  In the present embodiment, the holding portion is a claw portion 100 as best shown in FIGS. 5 and 6, which cooperates with the hole 18 and is locked there in the connector mounting position. This claw portion is a cut portion in the sheet on which the orientation component is formed, and is distorted so as to protrude from the inner surface of the protruding end portion 90 (arrow D).

  Of course, the holding part may be a hole (not shown) and cooperates with the corresponding bump or claw part of the device. In this case, the holes need to be distorted or moved in an inclined direction to engage and hold the bumps or tabs of the device, and the holes that make up the holding parts are connected It is necessary to have some extension in the direction that is distorted or inclined with respect to the direction.

  The protrusion 90 extends from the upper surface 78 of the orientation component in the connecting direction (arrow A) when the orientation component is attached.

  The protruding portion 90 includes two arms 92A and 92B that are substantially parallel to each other. The distal end of the arm (the end on the device side) is connected to a small platform 94 that forms a bridge between arms 92A and 92B. The arms 92A, 92B and the platform 94 are formed on the same plane and are placed in a mounting position on the upper surface 42 of the connector body.

  The holding portion is formed at the center portion of the platform 94. As best shown in FIGS. 7 and 8, the tab 100 is located in the opening 18 of the device 10 for connecting the orientation component (and the connector body to which the orientation component is connected) to the device 10. Pass through.

  7 and 8 show a cross-section of the connector when the receptacle is attached to the device 10. The central part of the connector is not shown electrical connection and is left blank (member number 102).

  The device 10 is on the right side of the drawing, with its extension 16 protruding leftward. The extension 16 is gripped by an electric shield in the guide path 28. The connector housing 34 is enclosed in the shield 32. The connector housing 34 and the shield 32 are main components of the connector main body 40.

  The receptacle 26 of the connector body 40 includes bumps or raised portions 36 on the upper surface thereof. The device extension 16 has a corresponding hole 38 for receiving a bump, thereby connecting the connector body onto the device. Bumps 36 and holes 38 are part of the connector fastening means on the device. When a pulling force is applied to the connector to cut it, the bump 36 is pushed by the inner wall of the hole 38 and moves downward in accordance with elasticity so as to remove the bump 36 from the hole 38.

  Furthermore, since the bump 36 is a small plastic part, it has proven to tend to wear during the life of the vehicle. The vibrations of the vehicle cause the bumps to reciprocate with respect to the holes, thereby causing the bumps to disappear by scraping, particularly when the temperature in this region is very high. Due to this phenomenon, after a while, the connector fastening is no longer fixed by the bumps 36.

  Thus, thanks to its dedicated fastening and directing part 70, a more robust fastening means is provided in this connector.

  Fastening (and orientation) component 70 is shown in dark hatched portions in FIGS.

  As shown, the fastening (and orientation) component 70 is configured to form a bridge that covers at least the rear portion of the connector body 40 when viewed in the cross-sectional direction. When viewed in a cross-sectional view, the orientation component is substantially U-shaped in a cross-section including the connecting direction.

  On the left side, the wall 76 serves as a guiding means for setting the direction of the cable. From this cable, only the braided wire 31 is shown in the figure. The braided wire 31 is fixed on the end neck portion 62 of the shield 32 by a collar 60.

  As described above, the tab 100 of the tip 90 is connected to the hole 18 of the extension 16 to connect the orientation component to the device.

  When stationary, the directing component 70 is formed such that the protruding portion 90 leans against the upper surface 42 of the shield. In this position, the tab 100 is placed in the hole 18 to securely lock the connector on the device.

  However, as mentioned above, it is sometimes necessary to remove the connector from the device. For this purpose, the connector further comprises release means, whereby the device can be released from the connector. These release means may be part of the directing part, part of the connector body, or both.

  In this embodiment, the release means comprises a lever 96, which can be pushed, so that the claw portion 100 acting as a holding portion moves away from the holding portion engaging direction, Thereby, the connector 20 comes off.

  More precisely, after the pawl 100 is unlocked, the connector is disconnected by sliding backwards so that the extension 16 of the device is disengaged from the receptacle 26 and opening 28. Advantageously, no tools are required for this operation. Advantageously, the connector can be fastened and released manually on the device.

  Advantageously, the lever 96 is configured to react against the reaction portion 64 of one of the connectors or devices so that, when the lever 96 is pressed, the lever contacts the reaction portion. To perform a pivoting motion to release the holding portion.

  Advantageously, the reaction portion comprises an embossment or bump 64 formed on the upper surface of the connector, as shown in FIGS. Therefore, the pivoting movement occurs around the P point. Therefore, when the lever 96 is pushed downward (usually manually), the platform 94 and the claw 100 are raised upward, thereby releasing the claw from the hole 18 as shown in FIG. The

  Advantageously, the claw in this embodiment is metal and therefore will not wear or disappear due to vehicle vibration. Therefore, the fastening function of the claw portion 100 can last for a long time. In addition, as seen in many prior art embodiments, the tensile load caused by the cable 30 of the connector is instead of being sent through the connector body to the inner housing 34 which is in the form of a plastic molding (metal Accepted) and sent by directing parts. Therefore, the risk of breaking or damaging the inner housing 34 and thereby causing electrical breakdown is reduced.

  Finally, although the illustrated embodiment includes only one tip or extension 90 to support one holding part 100, two or more extensions having corresponding holding parts It should be noted that 90 may be provided.

The directing component may be further designed to include a rail to slide on the device, thereby further reducing the need for a positioning function in the connector body 40.

Claims (9)

An end connector (20) for connecting a shielded cable (30) to the device (10), the end connector (20) being connected to the device (10);
A connector body (40) provided for receiving a shield end of the shielded cable (30);
In order to set the direction of the shielded cable (30) at the first fastening means (74) for fastening the directing part to the connector body and the connecting part between the directing part and the connector body (40). An orientation component (70) having a cable guiding means (72A, 72B, 72C),
The directing part (70) has second fastening means (100) for fastening the directing part to the device;
The cable guiding means comprises three or four openings (72A, 72B, 72C), through which the shielded cable (30) is within three or four specific directions (B, C, D). From one direction to set the direction of the shielded cable (30) ,
The second fastening means includes
A claw portion (100) to be a hook means;
Release means (96) for releasing the end connector (20) from the device (10);
The release means (96)
Provided on the directing component (70);
A claw (100) adapted to engage the device (10) and the claw moved in a direction away from the engagement direction, whereby the end connector (20) is moved to the device (10). End connector (20), characterized in that it comprises a lever (96) that can be pushed away from it . The end connector according to claim 1 , characterized in that said first fastening means comprise clip fastening means (74). The claw portion is formed at the tip-like extension (90), characterized in that it extends to have either been, or inclined to have holding portions engaging direction distorted with respect to the connection direction, wherein The end connector according to claim 1 or claim 2 . The lever (96) is configured to react against the reaction part (64) of the end connector (20) or the device (10), so that the lever is pushed. The end connector according to any one of claims 1 to 3 , characterized in that the lever contacts the reaction part and performs a pivoting movement to release the claw part (100). . End connector according to claim 4 , characterized in that the reaction part comprises a raised part (64). End connector (1) according to any one of the preceding claims , characterized in that the directing part (70) is made of a single metal plate. The end connector according to any one of claims 1 to 6 , characterized in that the directing part (70) covers at least a rear part of the connector body. 8. The end according to claim 1 , wherein the connector body further comprises third fastening means (36), the connector body being able to fasten to the device (10). 9. Connector. 9. End connector according to any one of the preceding claims, characterized in that the end connector (20) can be manually fastened and released in the device (10).

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